Boiler furnace



Feb. 9 1926.

E. T RIST BOILER FURNACE Filed July 29, 1924 INVENTOR f m/lwiy 77?, B7 ATORNEX easily and quickly installed and maintained Patented Feb. 9, 1926.

EDWAIRD T. BIST, OF OELWEIN, IOWA. I

BOILER summon.

Application filed July 29, 1924.- Serial No..728,872.-

To aZZ whom it mar concern:

Be it known that I, EDWARD T. Ris'r, a citizen of the United States, and a resident of Oelwein, county of IFayette, and Stateof Iowa, have invented certainnew and useful Improvements in Boiler Furnaces, of which the following is a specification.

. My invention relates to improvements in boiler furnaces and more particularly to improvements in refractory archesfor use in locomotive furnaces having arch bricksupporting members, as for instance, the familiar arch tubes. 1

The primary object of my invention is to improve and simplify the construction of such arches that they can be cheaply built,

in efficient working condition with but little labor and expense. I i i Another object of the invention is to provide a multiple brick arch for locomotive fireboxes having arch supporting members, which shall require but a single form of brick for the entire arch, which brick are so constructed as to accommodate for variations in the widthof fireboXes, and the irregularities in supporting members, irrespective of the number of said supporting members in each firebox.

A further object of the invention is to pro vide a form of brick. which readily adapts itself to arranging the bricks in rows between adjacent supporting members, with each row comprising pairs of brick, having bearing en ga'gement at one end upon the supporting members and a leaning relative-supporting engagement with each otherat the other end.

Still a further object of the invention is to provide a form of brick which is constructed at one endqto have a bearing engagement upon the supporting member and which is constructed at the other endto fit into and have a leaning bearing engagement with the same end of another brick upon the placing of the brick in position upon the supporting members. 1

Theseobjects of the invention, as well as others, together with the many advantages thereof will more fully appear as Iproceed with my specification.

In the drawings I Fig. 1 is a longitudinal section through a embodying my invention. i

Fig. 2 is aptransverse' section through the arch tubes and associatedparts as takenon the line 22 of Fig. 1. V I 11.

Fig. 3 is an enlarged transverse section through the adjacent supporting members or arch tubes with a pair of my coacting brick mounted thereon. i

Fig. 4 is a perspective View ofone of my improved brick. 7 i i Fig. 5 1s a perspectlve view of a modified form of brick embodying my invention.

Referring now. in detail to that embodiment of 'the'invention illustrated in the accompanying drawings :1' indicates the flue sheet of a locomotive -furnace,-2--.-2 the' side sheets, 3 the rear sheet and 4.- the crown sheet of' the furnace. The arch brick supporting members comprise, in this instance, arch vtubes 5 which extend from the lower part of .upon the sizeand type of locomotive, as well as other factors; of construction thereof.

WVhile the arch is-herein shown and will be herein described, as a "front arch, I wish it to locomotive firebox equipped with an arch be understood that my improved .archis I adaptedfor use, as a rear arch.

1 From Fig. 20f the drawings it is apparent thatthe supporting members or arch tubes without material changes,

5 are substantially equally spaced from each other, the sidemost tubes 5 being arranged closer to the side sheets 2 than tothe adjacent and in this instance, the center or intermediate tube 5.1 Such an arrangement is best adapted for brick of a uniform size but in many instances, other conditions arise in which this spacing is quite different.

The supporting members or tubes 5, in this instance, support a plurality of refractory bricks8 which are arrangedin two rows between adjacent tubes and serve to bridge and close the space between said tubes'and form an arch or bafiie wall. Each brick used herein is identical in form and construction so that a detailed descriptionofone will suffice for all. Each brick is of a fiat rectangular shape and preferably of a dimension greater in one direction than the other. The direction of greater dimension in this particular instance is referred to as the length which extends transversely of the furnace and the lesser dimension is referred to as the width which extends longitudinally of the furnace. The brick may or may not "be of the same substantial thickness throughout its entire area and, as shown herein, said brick has plain or smooth top and bottom surfaces. By smooth in this instance I mean without intended corrugations or projections but, as is apparent, said top and bottom surfaces may be of any suitable or desired contour or form without departing from thespirit of the invention.

One of the ends of the brick is formed to provide. a curved or grooved surface 9, as best shown inFigs. 3 and .4, which is adapted for a bearing engagement upon'one of the supporting members or tubes :5. The opposite end of said brick is constructedto provide a semi-cylindrical tongue or extension and-a reversely 'curved'groove or sea-t 11, both-of which are of substantially the same diameter and extend the entire width of the brick. scribed provides "what may betermed a com- 'pleinen'talend construction because when the bricks are arranged in operative relation in an arch, theextension 10 of one'brick fits into the groove 11 of an associated "brick in the manner of ahinge joint so that the bricks of each pair"interengageavith each other and provide a mutual leaning support,the one for the other" Such an intertmgagiug and mutual leaning -support is best shown in full linesin Fig. 3 wherethe bricks assume a substantialflatangle. However, whenthe tubes 5 are spaced closer to .gether the bricksassum'e amore acute angle as shown in dotted lines 111 said figure; the

interengaging parts of t'he brick of each pair providing for the relative change in angular position. I s

As shown in Fig. 2, certain of the brick rest upon the side tubes oft'he group and extend upwardly into engagement with the side sheets, and have a leaning support thereagainst with the end jextensio ns or tongues lOengaged'with saidside sheets.

In "Fig. '5 is illustrated a slightly modified form of brick construction in what .may properly :be termed the tongue end thereof. Said end of the brick is increased inthickness'as indicated at=121s0 as to insure against chipping or =breakingthe same in therough handling they naturally .receive. In said figure :the parts-similar to those described inconnection with Figs. .1 to 4, inclusive, have the same reference numbers.

It is gapparentfromthe foregoing descriptionathatiin my improved arcln a single This end construction I just debrick form serves with any number of tubes regardless of the irregularities of the spacing between said tubes. Furthermore, the bricks are of such form that they will readily pileup .for storage purposes and this without danger of breakage thereto.

From the detailed description above set forth, it is believed that the objects and advantages of my'novel and improved arch will be apparent to those skilled in the art, but since modifications may readily suggest themselves, I do "not wish to be limited to the exact construction herein shown and described except as may be pointed out in the appended claims.

I claim: I 1. In a locomotive-firebox, the combinationofa plurality-of brick supporting members therein, bricks forming a refractory fire arch, withsaid bricksarranged in en'- gagingpai-rs between adjacent brick sup porting members the brick *of each pair having atone end a bearing surface'to engage upon said supporting members and the other end of said brick-of each pair .having a half-round tongue on one side-thereof and a quarter round groove in the other side thereof at the corner and extending entirely across the same so that the tongue of one brick may engage 'in the groove of the associated brick oft-he pair to provide a mutualleaningsupport, the one for the other.

- 2. In a locomotive fijrebox,;thecombination of a plurality of briok supporting .mem'bers therein, bricks forming a refractory fire arch, with said bricksflarran 'ed iii-engaging pairs between ad aceut brie supporting members, the brick of each pair having at one eud a bearing surface to engage upon said supporting 'Il'lGll'lbGlS and the other end of'said brick of each pair having a half-round tongue on one side thereof am a quarter '-round-groov'e in the other side thereof at the corner and extending entirely across the same so that the tongue of one brick may engage in the groove of the associated brick of the pair and provide a hinge-like engagement thcrebetween which permits of avaryin'g spread of the other ends of said brick to accommodatethe different spacings of said brick supporting members.

'3. A brick for use man arch of the kind described comprising a relatively flat rectangular body having a groove at oneend and having at, the other end a half round tongue on one side thereof and a-quarter round groove inthe other sidethereof at the corner, which tongue and groove'extend entirely across said end, and are so formed ithat'the tongue of one brick may engage in the groove in the'same end of another brick,

and permit a relative-angular adjustment between said bricks. I

11. A brick 'fior nse in anarch of the kind described comprising a relatively flat rectangular body having a groove at one end and having atthe other end a half-round tongue on one side thereof and a quarter round groox 'e in the other side thereof at the corner, which tongue and groove extend entirely across said end, and are so formed that the tongue of one brick may engagein the groove in the same end of another brick, said last mentioned end of the brick being 10 thicker than the first mentioned end thereof. In testimony whereof, I have hereunto set my hand, this 19th day of J uly, 1924. EDWARD T. RIST. 

